CN101761326B - Experimental device for carbon dioxide replacement exploitation of gas hydrate - Google Patents
Experimental device for carbon dioxide replacement exploitation of gas hydrate Download PDFInfo
- Publication number
- CN101761326B CN101761326B CN 200910214412 CN200910214412A CN101761326B CN 101761326 B CN101761326 B CN 101761326B CN 200910214412 CN200910214412 CN 200910214412 CN 200910214412 A CN200910214412 A CN 200910214412A CN 101761326 B CN101761326 B CN 101761326B
- Authority
- CN
- China
- Prior art keywords
- gas
- carbon dioxide
- pressure
- dimensional model
- cylindrical shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 39
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 39
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 58
- 238000012545 processing Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000004088 simulation Methods 0.000 claims abstract description 21
- 239000012530 fluid Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 239000000523 sample Substances 0.000 claims description 29
- 239000012224 working solution Substances 0.000 claims description 28
- 230000006835 compression Effects 0.000 claims description 24
- 238000007906 compression Methods 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 82
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 40
- 150000004677 hydrates Chemical class 0.000 description 13
- 239000003345 natural gas Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000002474 experimental method Methods 0.000 description 6
- 238000005065 mining Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- VTVVPPOHYJJIJR-UHFFFAOYSA-N carbon dioxide;hydrate Chemical compound O.O=C=O VTVVPPOHYJJIJR-UHFFFAOYSA-N 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
本发明公开了一种二氧化碳置换开采天然气水合物的实验装置和方法，包括一维模型、气体供给单元、工作液供给单元、轴压控制单元、回压控制单元、环境控制单元，并在上述各单元上分别设有连接到数据处理单元的传感器；一维模型设置于环境控制单元当中，其内部为密封的模拟腔，其上设有气液入口、气液出口和轴压进液口，气体供给单元的气体输出管路与工作液供给单元的工作液输出管路连接后与气液入口连通，回压控制单元的回压采集管路与气液出口连通，轴压控制单元与轴压进液口连接；一维模型上还设置抽真空接口。通过本发明可真实地模拟外部环境，进行二氧化碳置换天然气水合物模拟开采，可以为天然气水合物的二氧化碳置换开采提供指导。
The invention discloses an experimental device and method for the replacement of carbon dioxide to exploit natural gas hydrate, including a one-dimensional model, a gas supply unit, a working fluid supply unit, an axial pressure control unit, a back pressure control unit, and an environment control unit. The units are respectively equipped with sensors connected to the data processing unit; the one-dimensional model is set in the environmental control unit, and its interior is a sealed simulation chamber, which is provided with a gas-liquid inlet, a gas-liquid outlet, and an axial pressure liquid inlet. The gas output pipeline of the supply unit is connected with the working fluid output pipeline of the working fluid supply unit and then communicated with the gas-liquid inlet, the back pressure collection pipeline of the back pressure control unit is connected with the gas-liquid outlet, the axial pressure control unit is connected with the axial pressure inlet The liquid port is connected; a vacuum port is also set on the one-dimensional model. Through the invention, the external environment can be truly simulated, and the simulated production of the carbon dioxide replacement natural gas hydrate can be carried out, which can provide guidance for the carbon dioxide replacement production of the natural gas hydrate.
Description
Technical field
The present invention relates to the exploitation of gas hydrates technical field, especially a kind of analogy method of carbon dioxide replacement exploitation of gas hydrate and experimental facilities.
Background technology
Gas hydrates are meant a kind of cage shape crystalline solid that natural gas and water generate under uniform temperature and pressure, it meets fire is incendivity, be commonly called as " combustible ice ", the research of early stage gas hydrates mainly is in order to solve the blockage problem of pipeline, equipment in oil, gas production and the transportation, mainly is the generation that suppresses hydrate.Along with people to the deepening continuously of hydrate research, the characteristic of hydrate and be the human knowledge more and more to the influence of environment be the more important thing is that it shows as value of a kind of effective alternative energy source also benefit to give prominence to.
Gas hydrates can be present in occurring in nature in many ways, and based on the characteristics of gas hydrates, it is different with the exploitation of the conventional traditional energy.Show that it is solid that hydrate buries at the bottom of the ocean, molecular configuration changes in recovery process, becomes gas from solid.That is to say that hydrate undergoes phase transition in recovery process.At present the developing thought of the relevant gas hydrates of great majority all are to consider that at first the gas hydrates how will contain in deposit decompose basically, and then with natural gas extraction to ground.In general, breaking the temperature, pressure condition of gas hydrates stable existence artificially, cause it to decompose, is the main method of methane resource amount in the present development of natural gas hydrate.Existing exploitation method mainly contains the integrated application of voltage drop method, heat shock method, chemical-agent technique and these three kinds of methods.This year, because the application of a large amount of fossil fuels, make that carbon dioxide in air concentration is more and more higher, the greenhouse effect that cause have caused rising and other natural calamities on sea level, therefore be stored into after having the scholar to propose carbon dioxide reclaimed under the face of land reducing carbon dioxide in air concentration, carbon dioxide be injected into face of land gas hydrates can make the conversion of gas hydrates in hiding to carbon dioxide hydrate.Above-mentioned technology can not only promote the recovery of natural gas, and carbon dioxide can be kept sedimental mechanical stability form hydrate in deposit after.
Because the geological conditions of various places is different with the composition of gas hydrates, it is different to form mechanism, so study by simulated experiment, thereby select suitable displacement pressure to determine more suitable production practice, directly instruct and reconnoitre exploitation, but current experiments equipment is relatively simple, is difficult to satisfy present carbon dioxide replacement exploitation of gas hydrate research needs, and the professional simulation laboratory that is entirely the service of carbon dioxide replacement exploitation of gas hydrate method simultaneously is also fewer.
Summary of the invention
The object of the present invention is to provide a kind of carbon dioxide replacement exploitation of gas hydrate analogy method and experimental facilities, this analogue experiment installation can the various withdrawal mechanisms of comprehensive study, production performance and various exploitation methods are optimized and overall merit.
For realizing above purpose, the present invention has taked following technical scheme: a kind of experimental facilities of carbon dioxide replacement exploitation of gas hydrate, comprise one-dimensional model, gas feed unit, working solution feed unit, axial compression control module, back pressure control module, environment control unit, and on above-mentioned each unit, being respectively equipped with the sensor that is used to respond to each cell operation state, this sensor electrical is connected to data processing unit; Described one-dimensional model is arranged in the middle of the environment control unit, its inner simulation chamber for sealing, on one-dimensional model, be provided with gas-liquid inlet, gas liquid outlet and axial compression inlet, the gas output tube road of described gas feed unit is connected the back and is communicated with the gas-liquid inlet with the working solution output pipe of working solution feed unit, the back pressure of back pressure control module is gathered pipeline and is communicated with described gas liquid outlet, and described axial compression control module is connected with described axial compression inlet; Also be provided with on the one-dimensional model and vacuumize interface, be used for being connected with vacuumizing device;
Environment control unit is used to control the environment temperature of one-dimensional model; The gas feed unit is used for to one-dimensional model input natural gas and carbon dioxide, and can control the pressure of the gas of input; The working solution feed unit is used for input service liquid in one-dimensional model; The back pressure control module is used to control the output pressure of natural gas after the simulation mining, water etc.; The axial compression control module is used for the porous media in the compacting one-dimensional model simulation chamber; Data processing unit is used to gather and handle the signal of each sensor, the signals collecting of each sensor generally comprises: amount of natural gas, the water yield imported in one-dimensional model simulation chamber, the amount of natural gas of simulation mining output, the water yield of generation, temperature, pressure, differential pressure, acoustic impedance and resistance in the simulation chamber, the data of each sensor are handled and are generally comprised: output time-temperature curve, time-pressure curve, time-the differential pressure curve, time-acoustic impedance curve, time-resistance curve, pressure-production curve or the like, so that each data is carried out overall merit; Data processing unit can carry out on-line measurement to parameters such as temperature, pressure, flow and liquid weights, shows its value and aggregate-value in wink, and resistance, acoustic impedance are surveyed all can the on-line continuous monitoring.
Described one-dimensional model is cylindrical stainless steel cauldron, comprises cylindrical shell, is with forward flange and rear flange before and after this cylindrical shell on the end respectively to form the simulation chamber of sealing; The outside at described cylindrical shell is with water leg, outlet is connected with described environment control unit respectively this water leg with water leg by the water leg inlet, described gas-liquid inlet is arranged on the forward flange and is communicated in the cylindrical shell, and described gas liquid outlet is arranged on the rear flange and is communicated in the cylindrical shell.By the heat exchange effect that water leg can better improve one-dimensional model is set, more accurately one-dimensional model is carried out temperature control.
Be evenly equipped with temp probe, differential pressure probe, Resistance probe in described cylindrical shell, be connected to the electrode interface of electrode, temp probe is connected to temperature pick up, and Resistance probe is separately positioned on the both sides of cylindrical shell, and described differential pressure probe is connected to first differential pressure pick-up; Position near gas-liquid inlet and gas liquid outlet is provided with ultrasonic emitting probe and ultrasonic wave receiving transducer respectively in end, cylindrical shell two ends, vacuumize interface and be arranged on the gas-liquid entrance, this vacuumizes interface and is connected to vacuum pump, also be respectively equipped with the pressure measxurement interface at gas-liquid inlet and gas-liquid exit, this pressure measxurement interface is connected to pressure sensor, and described electrode, temperature pick up, first differential pressure pick-up, pressure sensor, ultrasonic probe are connected with described data processing unit respectively.
Described environment control unit includes water bath with thermostatic control, and described water leg inlet and water leg outlet are connected with water bath with thermostatic control respectively, and described sensor is the temperature pick up that is arranged in the water bath with thermostatic control.Can carry out accuracy control over temperature to one-dimensional model by environment control unit.
Described gas feed unit comprise be arranged on the gas output tube road, and the gas source, carbon dioxide air source, gas compressor, reducing valve, stop valve, strainer, gas flowmeter and the one way valve that connect successively, be connected with pressure meter on one way valve, described sensor is a gas flowmeter.Sensing element on this gas feed unit is a gas flowmeter, and gas flowmeter can be input to measured gas flow value data processing unit and carry out analyzing and processing.
Described working solution feed unit comprise be arranged on the working solution output pipe, and the working solution holding vessel, hydraulic pump, intermediate receptacle, heating tank, the stop valve that connect successively, described sensor is the liquid-pressure pick-up that is arranged in the hydraulic pump.Sensor on the working solution feed unit is the hydraulic pump that liquid-pressure pick-up is housed, intermediate receptacle is when experimentation need add auxiliary agent, avoid auxiliary agent to the damage of hydraulic pump and a kind of indirect container that uses, in hydrate heat injection exploitation experiment, it is temperature required to need that heating tank is heated to experiment, and working solution is flowed through and entered in the one-dimensional model after the abundant heat exchange of heating tank.
Described back pressure control module comprises that being arranged on back pressure gathers back-pressure valve, gas-liquid separator and the fluid reservoir that on the pipeline, also connects successively, and the gas flowmeter that is connected with this gas-liquid separator, with tank connected second differential pressure pick-up of liquid storage, described sensor is the gas flowmeter and second differential pressure pick-up.
Described axial compression control module comprises hydraulic pump and the stop valve that is connected with the axial compression inlet.Can guarantee to compress the porous media in the one-dimensional model simulation chamber, make it more meet porous media properties in the true environment.
Data processing unit comprises data acquisition device, the central processing unit that is connected with data acquisition device includes the data acquisition module that is used for the pick-up transducers signal, the data memory module that is used for the data processing module of processes sensor signal and is used to store the data processing module result in the described central processing unit.Data acquisition module and one-dimensional model, natural gas feed unit, working solution feed unit, axial compression control module, back pressure control module are connected with sensor electrical on the environment control unit, gather parameters such as the pairing pressure of each sensor, differential pressure, temperature, resistance, acoustic impedance, yield; Data processing module can be data processing software or other structure, data processing module is handled the signal of each sensor, to obtain curves such as time-pressure, time-differential pressure, time-temperature, time-resistance, time-acoustic impedance, time-yield, be used for the situation of exploitation is analyzed; Data memory module can be stored the result and the observed image of fibre opic endoscope of data processing module.
The present invention also provides a kind of analogy method of carbon dioxide replacement exploitation of gas hydrate, adopts to methane hydrate layer method exploitation continuous or intermittently injecting carbon dioxide gas methane hydrate, and its concrete process comprises step:
(1) under constant volume or level pressure condition, in reaction vessel, utilize the reaction of natural gas and working solution to generate the methane hydrate layer; Reaction vessel can be the one-dimensional model in the aforesaid device herein;
(2) injecting carbon dioxide gas in reaction vessel;
(3) gather the gas phase in the reaction vessel and analyze component in the different time respectively;
(4) when the gas phase methane content in the reaction vessel is higher than predetermined value, the methane gas in the beginning level pressure exploitation reactor.
The present invention compared with prior art has following advantage:
1, the one-dimensional model in this experimental facilities is fixed by flange, and is easy to loading and unloading.
2, carbon dioxide replacement gas hydrates simulation mining can be carried out by this experimental facilities, and multiple different mining type can be simulated to compare;
3,, can utilize the hydrate state of simulation inside, chamber such as resistance, acoustic impedance by this experimental facilities;
4, experimental facilities of the present invention can be simulated external environment condition truly, and carbon dioxide replacement exploitation process, exploitation effect are carried out comprehensive assessment, can provide guidance for the carbon dioxide replacement exploitation of gas hydrates.
Description of drawings
Fig. 1 is a structured flowchart of the present invention;
Fig. 2 is the cross-sectional view of one-dimensional model of the present invention;
Fig. 3 is the plan structure schematic diagram of one-dimensional model of the present invention;
Description of reference numerals: the 1-one-dimensional model, 2-simulates chamber, 3-water bath with thermostatic control, the 4-water leg, 5-gas source, 6-carbon dioxide air source, the 7-gas compressor, 8-reducing valve, 9-stop valve, the 10-strainer, 11-gas flowmeter, 12-one way valve, the 13-pressure meter, 14-pressure-control valve, 15-working solution holding vessel, the 16-hydraulic pump, 17-intermediate receptacle, 18-heating tank, the 19-stop valve, 20-vacuum pump, 21-hydraulic pump, 22-gas sample mouth, 23-back-pressure valve, 24-gas-liquid separator, the 25-gas flowmeter, 26-fluid reservoir, 27-second differential pressure pick-up, the 28-pressure sensor, 29-first differential pressure pick-up, 30-electrode, the 31-temperature pick up, 32-ultrasonic wave, 33-data acquisition device, the 34-central processing unit, the import of 35-gas-liquid, 37-water leg inlet, 38-temp probe, 39-differential pressure probe, the 40-hydrate layer, 41-cylindrical shell, 42-hold-down nut, 43-axial compression piston, the 44-gas liquid outlet, 45-axial compression inlet, 46-rear flange, the outlet of 47-water leg, 48-ultrasonic emitting probe, 49-ultrasonic wave receiving transducer, 50-forward flange, the 51-Resistance probe, the 52-Resistance probe.
The specific embodiment
Below in conjunction with the drawings and specific embodiments content of the present invention is described in further details.
Embodiment:
See also shown in Figure 1, a kind of experimental facilities of carbon dioxide replacement exploitation of gas hydrate, comprise one-dimensional model 1, gas feed unit, working solution feed unit, axial compression control module, back pressure control module, environment control unit, be provided with some sensors on above-mentioned each unit, these sensors are electrically connected with data processing unit by holding wire or data wire; And on above-mentioned each unit, being respectively equipped with the sensor that is used to respond to each cell operation state, this sensor electrical is connected to data processing unit; The inside of one-dimensional model 1 is the simulation chamber of sealing, one-dimensional model 1 is arranged in the middle of the environment control unit, on one-dimensional model 1, be provided with gas-liquid inlet 35, gas liquid outlet 44 and axial compression inlet 45, the gas output tube road of gas feed unit is connected the back and is communicated with gas-liquid inlet 35 by control valve again with the working solution output pipe of working solution feed unit, the back pressure of back pressure control module is gathered pipeline and is communicated with gas liquid outlet 44 by control valve, the axial compression control module is connected with described axial compression inlet 45 by control valve, also be provided with on the one-dimensional model 1 and vacuumize interface, be used for being connected with vacuumizing device.
See also Fig. 2 and shown in Figure 3, one-dimensional model 1 is cylindrical stainless steel cauldron, comprise cylindrical shell 41, be with forward flange 50 and rear flange 46 respectively on this end, cylindrical shell 41 front and back, the simulation chamber 2 that forward flange 50 and rear flange 46 seal with formation by some bolts and cylindrical shell 41 fixing seals; Be with water leg 4 in the outside of cylindrical shell 41, this water leg 4 is connected with environment control unit respectively with water leg outlet 47 by water leg inlet 37, gas-liquid inlet 35 is arranged on forward flange 50 middle parts and is communicated in the cylindrical shell 41, gas liquid outlet 44 is arranged on rear flange 46 middle parts and is communicated in the cylindrical shell 41, also be connected with axial compression piston 43 on the rear flange 46 of cylindrical shell 41, axial compression piston 43 is fixed on the cylindrical shell 41 by hold-down nut 42.
In cylindrical shell 41, be evenly equipped with temp probe 38, differential pressure probe 39, Resistance probe (51,52), be connected to the electrode interface of electrode 30, temp probe 38 is connected to temperature pick up 31, Resistance probe (51,52) be separately positioned on the both sides of cylindrical shell 41, differential pressure probe 39 is connected to first differential pressure pick-up 29; In end, cylindrical shell 41 two ends, be provided with ultrasonic emitting 48 ultrasonic wave of popping one's head near the position of gas-liquid inlet 35 and gas liquid outlet 44 respectively and receive 49, can the measure analog chamber acoustic impedances in 2, be provided with and vacuumize interface at gas-liquid 35 places that enter the mouth, this vacuumizes interface and is connected to vacuum pump 20, also be respectively equipped with the pressure measxurement interface at gas-liquid inlet 35 and gas liquid outlet 44 places, this pressure measxurement interface is connected to pressure sensor 28, can measure the pressure size that one-dimensional model 1 is imported and exported, electrode 30, temperature pick up 31, first differential pressure pick-up 29, pressure sensor 28, ultrasonic probe (48,49) is connected with data processing unit respectively.After natural gas and working solution are injected into simulation chamber 2, in simulation chamber 2, form hydrate layer; Hydrate layer in axial direction is divided into 4 measuring points, measures temperature, resistance and differential pressure respectively.
The concrete structure of other unit of the present invention is as described below:
Environment control unit includes water bath with thermostatic control 3, and water leg inlet 37 and water leg outlet 47 are connected with water bath with thermostatic control 3 respectively, and sensor is the temperature pick up that is arranged in the water bath with thermostatic control 3.Environment control unit is used for one-dimensional model is carried out accuracy control over temperature.
The gas feed unit comprise be arranged on the gas output tube road, and the gas source 5, carbon dioxide air source 6, gas compressor 7, reducing valve 8, stop valve 9, strainer 10, gas flowmeter 11 and the one way valve 12 that connect successively, on one way valve 12, be connected with pressure meter 13, sensor is a gas flowmeter 11, and the gas output tube road communicates with gas-liquid inlet 35.
The working solution feed unit comprise be arranged on the working solution output pipe, and the working solution holding vessel 15, hydraulic pump 16, intermediate receptacle 17, heating tank 18, the stop valve 19 that connect successively, sensor is the liquid-pressure pick-up that is arranged in the hydraulic pump 16, the working solution output pipe communicates with gas-liquid inlet 35, and simulation chamber 2 is connected with stop valve 19, vacuum pump 20 respectively.
The back pressure control module comprises that being arranged on back pressure gathers back-pressure valve 23, gas-liquid separator 24 and the fluid reservoir 26 that on the pipeline, also connects successively, and the gas flowmeter 25 that is connected with this gas-liquid separator 24, second differential pressure pick-up 27 that is connected with fluid reservoir 26, sensor are the gas flowmeter 25 and second differential pressure pick-up 27.The back pressure control module will be gathered pipeline as back pressure with a pipe interface of back-pressure valve 23, be communicated with the gas liquid outlet 44 on the one-dimensional model 1, the back pressure control module is mainly pointed out mouth pressure control and output metering, back-pressure valve 23 is used to control the outlet pressure of one-dimensional model 1, the gas that gas-liquid separator 24 is incited somebody to action wherein, the liquid after separating, measure the amount of natural gas of simulation mining by gas flowmeter 25, the liquid of simulation mining flows into fluid reservoir 26, utilize second differential pressure pick-up 27 that is connected with this fluid reservoir 26 to measure this amount of liquid, this back pressure control module also can comprise the back pressure gas cylinder, reducing valve, pressure meter, atmospheric valve.
The axial compression control module comprises hydraulic pump 21 and stop valve, and hydraulic pump 21 is connected with axial compression inlet 45 by stop valve.
Data processing unit comprises data acquisition device 33, the central processing unit 34 that is connected with data acquisition device 33 includes the data acquisition module that is used to gather each sensor signal, the data memory module that is used for the data processing module of processes sensor signal and is used to store the data processing module result in the central processing unit 34.
The present invention also provides a kind of analogy method of carbon dioxide replacement exploitation of gas hydrate, adopts to methane hydrate layer method exploitation continuous or intermittently injecting carbon dioxide gas methane hydrate, and its concrete process comprises step:
(1) under constant volume or level pressure condition, in reaction vessel, utilize the reaction of natural gas and working solution to generate the methane hydrate layer; Be reaction vessel with the one-dimensional model in the aforementioned means in the present embodiment, reaction generates the methane hydrate layer under the predetermined temperature pressure condition; Methane hydrate can generate under constant volume or level pressure condition, and temperature that experiment is adopted and pressure are all determined according to the true pressure and the temperature on the stratum, hydrate layer place of being simulated.In generative process, it is constant that the temperature in the reactor keeps.Generation consumption tolerance according to the pressure change calculations in the reactor, is measured according to the inlet end gas flowmeter during level pressure when constant volume.
(2) injecting carbon dioxide gas in one-dimensional model; The pressure that carbon dioxide injects is higher than the balance decomposition pressure of methane hydrate under experimental temperature, to guarantee that not having methane hydrate decomposes.The carbon dioxide gas scale of construction of injecting is measured according to the inlet end gas flowmeter.
(3) gather the gas phase in the one-dimensional model and analyze component in the different time respectively; Observation reacting system pressure and temperature variations every 24～48h acquisition system minimum gas, are analyzed its change of component situation with gas chromatograph, monitor the degree of carrying out of displacement reaction.
The predetermined value of methane content when (4) determining exploitation according to the economy of the pace of change of methane content in the experimentation and exploitation, generally reaching molar percentage 80%-90% with methane content is predetermined value.When the gas phase methane content in the one-dimensional model is higher than predetermined value, the methane gas in the beginning level pressure exploitation reactor.Outlet pressure is by the control of back pressure control module, and the yield of gas is measured by gas flowmeter.
In the present embodiment, the withstand voltage scope of one-dimensional model 1 is 0～25MPa, and inner chamber is the cylindrical rubber sleeve of volume 283.4ml; Cylindrical shell 41 reactors inside is cylindrical, internal diameter 38mm, inner effective length 250mm.
Above-listed detailed description is at the specifying of possible embodiments of the present invention, and this embodiment is not in order to limiting claim of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the claim of this case.
Claims (7)
1. the experimental facilities of a carbon dioxide replacement exploitation of gas hydrate, it is characterized in that: comprise one-dimensional model (1), gas feed unit, working solution feed unit, axial compression control module, back pressure control module, environment control unit, and on above-mentioned each unit, being respectively equipped with the sensor that is used to respond to each cell operation state, this sensor electrical is connected to data processing unit; The inside of described one-dimensional model (1) is the simulation chamber of sealing, one-dimensional model (1) is arranged in the middle of the environment control unit, on one-dimensional model (1), be provided with gas-liquid inlet (35), gas liquid outlet (44) and axial compression inlet (45), the gas output tube road of described gas feed unit is connected the back and is communicated with gas-liquid inlet (35) with the working solution output pipe of working solution feed unit, the back pressure of back pressure control module is gathered pipeline and is communicated with described gas liquid outlet (44), and described axial compression control module is connected with described axial compression inlet (45); Also be provided with on the one-dimensional model (1) and vacuumize interface, be used for being connected with vacuumizing device; One-dimensional model (1) includes cylindrical shell (41), in described cylindrical shell (41), be evenly equipped with temp probe (38), differential pressure probe (39), Resistance probe (51,52), be connected to the electrode interface of electrode (30), temp probe (38) is connected to first temperature pick up (31), Resistance probe (51,52) be separately positioned on the both sides of cylindrical shell (41), described differential pressure probe (39) is connected to first differential pressure pick-up (29); Position near gas-liquid inlet (35) in cylindrical shell (41) end, two ends is provided with ultrasonic wave receiving transducer (49), is provided with ultrasonic emitting probe (48) in the position near gas liquid outlet (44); Vacuumize interface and be arranged on gas-liquid inlet (35) and locate, this vacuumizes interface and is connected to vacuum pump (20); Locate also to be respectively equipped with the pressure measxurement interface at gas-liquid inlet (35) and gas liquid outlet (44), this pressure measxurement interface is connected to pressure sensor (28), described electrode (30), first temperature pick up (31), first differential pressure pick-up (29), pressure sensor (28), ultrasonic probe (48,49) are connected with described data processing unit respectively; Described gas feed unit comprise be arranged on the gas output tube road, and the gas source (5), carbon dioxide air source (6), gas compressor (7), reducing valve (8), first stop valve (9), strainer (10), first gas flowmeter (11) and the one way valve (12) that connect successively, be connected with pressure meter (13) on one way valve (12), the sensor that is used to respond to this cell operation state on the described gas feed unit is gas flowmeter (11).
2. the experimental facilities of carbon dioxide replacement exploitation of gas hydrate as claimed in claim 1, it is characterized in that: described one-dimensional model (1) is cylindrical stainless steel cauldron, comprise cylindrical shell (41), be with forward flange (50) and rear flange (46) before and after this cylindrical shell (41) on the end respectively to form the simulation chamber (2) of sealing; Be with water leg (4) in the outside of described cylindrical shell (41), this water leg (4) is connected with described environment control unit respectively with water leg outlet (47) by water leg inlet (37), described gas-liquid inlet (35) is arranged on forward flange (50) and goes up and be communicated in the cylindrical shell (41), and described gas liquid outlet (44) is arranged on rear flange (46) and goes up and be communicated in the cylindrical shell (41).
3. the experimental facilities of carbon dioxide replacement exploitation of gas hydrate as claimed in claim 2, it is characterized in that: described environment control unit includes water bath with thermostatic control (3), described water leg inlet (37) and water leg outlet (47) are connected with water bath with thermostatic control (3) respectively, are used for responding to the sensor of this cell operation state on the described environment control unit for being arranged on second temperature pick up of water bath with thermostatic control (3).
4. the experimental facilities of carbon dioxide replacement exploitation of gas hydrate as claimed in claim 1, it is characterized in that: described working solution feed unit comprise be arranged on the working solution output pipe, and the working solution holding vessel (15), hydraulic pump (16), intermediate receptacle (17), heating tank (18), second stop valve (19) that connect successively, be used to respond to the sensor of this cell operation state on the described working solution feed unit for being arranged on the liquid-pressure pick-up in the hydraulic pump (16).
5. the experimental facilities of carbon dioxide replacement exploitation of gas hydrate as claimed in claim 1, it is characterized in that: described back pressure control module comprises that being arranged on back pressure gathers on the pipeline, and the back-pressure valve (23) that connects successively, gas-liquid separator (24) and fluid reservoir (26), and second gas flowmeter (25) that is connected with this gas-liquid separator (24), second differential pressure pick-up (27) that is connected with fluid reservoir (26), the sensor that is used to respond to this cell operation state on the described back pressure control module is gas flowmeter (25) and second differential pressure pick-up (27).
6. the experimental facilities of carbon dioxide replacement exploitation of gas hydrate as claimed in claim 1 is characterized in that: described axial compression control module comprises the hydraulic pump (21) and the 3rd stop valve that is connected with axial compression inlet (45).
7. the experimental facilities of carbon dioxide replacement exploitation of gas hydrate as claimed in claim 1, it is characterized in that: data processing unit comprises data acquisition device (33), the central processing unit (34) that is connected with data acquisition device (33) includes the data acquisition module that is used for the pick-up transducers signal, the data memory module that is used for the data processing module of processes sensor signal and is used to store the data processing module result in the described central processing unit (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910214412 CN101761326B (en) | 2009-12-30 | 2009-12-30 | Experimental device for carbon dioxide replacement exploitation of gas hydrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910214412 CN101761326B (en) | 2009-12-30 | 2009-12-30 | Experimental device for carbon dioxide replacement exploitation of gas hydrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101761326A CN101761326A (en) | 2010-06-30 |
| CN101761326B true CN101761326B (en) | 2013-07-31 |
Family
ID=42492694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910214412 Active CN101761326B (en) | 2009-12-30 | 2009-12-30 | Experimental device for carbon dioxide replacement exploitation of gas hydrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101761326B (en) |
Families Citing this family (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963057B (en) * | 2010-09-21 | 2013-01-23 | 中国科学院广州能源研究所 | Simulation experimental device for natural hydrate geological stratification |
| CN102454394A (en) * | 2010-10-15 | 2012-05-16 | 中国海洋石油总公司 | Method for displacing methane from natural gas hydrate |
| US8607878B2 (en) * | 2010-12-21 | 2013-12-17 | Vetco Gray Inc. | System and method for cathodic protection of a subsea well-assembly |
| CN102094610A (en) * | 2010-12-24 | 2011-06-15 | 中国科学院广州能源研究所 | An Experimental Simulation System for CO2 Exploitation of Natural Gas Hydrate |
| CN102237005A (en) * | 2011-05-10 | 2011-11-09 | 中国石油化工股份有限公司 | Automatic back pressure control device |
| CN102704894B (en) * | 2012-05-30 | 2015-03-11 | 上海交通大学 | In-situ submarine natural gas hydrate exploiting device and method thereof |
| CN102778508A (en) * | 2012-07-24 | 2012-11-14 | 中国科学院广州能源研究所 | Device for in-situ synthesis and sound characteristic measuring of hydrate in deposits |
| CN102853260A (en) * | 2012-09-28 | 2013-01-02 | 重庆市山城燃气设备有限公司 | Automatic control safe displacement device of gas engineering and application method thereof |
| CN102865066B (en) * | 2012-10-16 | 2014-03-12 | 中国石油大学(华东) | Experiment device and method for deepwater shaft multiphase flow containing natural gas hydrate phase changes |
| CN103174407B (en) * | 2013-03-19 | 2015-07-08 | 中国石油天然气股份有限公司 | CO2Method for replacing methane in stratum natural gas hydrate by natural gas replacement emulsion |
| CN103257079A (en) * | 2013-04-28 | 2013-08-21 | 中国科学院广州能源研究所 | Three-dimensional simulating device of natural gas hydrate mining stratum stability |
| CN103233704B (en) * | 2013-05-01 | 2015-12-09 | 吉林大学 | A kind of CO 2/ N 2replacement exploitation permafrost region gas hydrates experimental simulation device |
| CN103927921B (en) * | 2014-04-15 | 2016-03-16 | 吉林大学 | Hydrate Multi-functional analog experimental system under microbial action |
| CN103971577B (en) * | 2014-05-16 | 2016-01-20 | 青岛海洋地质研究所 | CO 2replacement exploitation of gas hydrate experiment simulator |
| CN103982165B (en) * | 2014-05-21 | 2016-08-24 | 中国石油大学(北京) | A Method for Exploiting Natural Gas Hydrate Using Mixed Gas of CO2 and H2 |
| CN104088612B (en) * | 2014-06-20 | 2016-10-05 | 华南理工大学 | The experimental simulation device of a kind of exploitation of gas hydrate and method |
| CN104132246A (en) * | 2014-08-07 | 2014-11-05 | 辽宁石油化工大学 | Peak regulation method and device for natural gas hydrate replacing by carbon dioxide |
| CN104697887B (en) * | 2015-03-31 | 2018-02-23 | 中国石油大学(华东) | The isothermal constant pressure experimentation device of gas-dynamic desorption flowing in danks |
| CN105003237B (en) * | 2015-06-11 | 2020-04-14 | 中国石油大学(华东) | Apparatus and method for integrating geothermal exploitation of natural gas hydrate and CO2 waste gas reinjection treatment |
| CN105134148B (en) * | 2015-07-20 | 2016-11-09 | 中国石油大学(华东) | An Experimental Method for Methane Huff and Puff Assisted by Foam Oil in Thin Heavy Oil Reservoirs |
| CN105651648B (en) * | 2016-03-21 | 2018-11-09 | 中国华能集团清洁能源技术研究院有限公司 | It is a kind of to replace and adsorb analytic simulation test system and method |
| CN106000229B (en) * | 2016-06-13 | 2019-03-08 | 中山大学 | Visualized Reactor and Visualized Experiment System and Method for Displacement of Natural Gas Hydrate |
| CN106593370B (en) * | 2017-01-17 | 2020-02-21 | 中国石油大学(华东) | A kind of simulation experiment device and working method of natural gas hydrate depressurization exploitation |
| CN108301824A (en) * | 2018-01-20 | 2018-07-20 | 西南石油大学 | It is a set of can multipoint observation heating water bath microcosmic oil drive device |
| CN108490151B (en) * | 2018-03-05 | 2020-07-03 | 浙江大学 | Hypergravity Simulation System for Gas Hydrate Depressurization and Exploitation |
| CN109613112B (en) * | 2018-04-08 | 2022-03-04 | 江苏联友科研仪器有限公司 | Online coring test system for hydrate sedimentary layer |
| CN109372499B (en) * | 2018-11-02 | 2023-09-22 | 广州海洋地质调查局 | A geological reservoir radial flow simulation system |
| CN109458164B (en) * | 2018-12-25 | 2024-04-19 | 西南石油大学 | Visual reaction device and simulation method of variable-temperature variable-pressure dynamic reaction |
| CN110939411B (en) * | 2019-11-11 | 2022-03-29 | 华南理工大学 | Supercritical CO2Replacement mining of CH4Hydrate experimental device and using method |
| CN110700803B (en) * | 2019-11-15 | 2024-08-06 | 中国华能集团有限公司 | System for exploiting natural gas hydrate by simulating carbon dioxide substitution method |
| CN110873286B (en) * | 2019-11-21 | 2020-08-25 | 西安交通大学 | Multiple air source supply device for high-pressure large-flow gas experiment |
| CN111521685A (en) * | 2020-05-21 | 2020-08-11 | 中国地质大学（武汉） | Natural gas hydrate under-pressure transfer and parameter detection system |
| CN114166937B (en) * | 2021-12-08 | 2023-09-05 | 中国科学院广州能源研究所 | Experimental system for decomposing and secondarily generating hydrate in sediment |
| CN114215502B (en) * | 2021-12-17 | 2023-10-10 | 广东石油化工学院 | Three-dimensional development experimental device and method for natural gas hydrate simulated by multiple production methods |
| CN114278274B (en) * | 2021-12-28 | 2023-05-26 | 中国地质大学（北京） | Natural gas hydrate exploitation simulation device and method |
| CN116047022B (en) * | 2023-01-09 | 2024-10-29 | 东北石油大学 | Experimental device and method for studying the formation, decomposition and replacement of natural gas hydrate in porous media |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5434330A (en) * | 1993-06-23 | 1995-07-18 | Hnatow; Miguel A. | Process and apparatus for separation of constituents of gases using gas hydrates |
| CN101050697A (en) * | 2007-04-06 | 2007-10-10 | 中国科学院广州能源研究所 | One dimension production analogue test device for natural gas hydrate |
| CN101055276A (en) * | 2007-02-14 | 2007-10-17 | 中国科学院广州能源研究所 | Natural gas hydrate phase balance emulation experiment device |
| CN101376853A (en) * | 2008-09-09 | 2009-03-04 | 中国石油大学(北京) | Method and apparatus for simulating gas hydrate accumulation process under one-dimensional condition |
| CN101550816A (en) * | 2009-05-20 | 2009-10-07 | 中国科学院广州能源研究所 | Three-dimensional exploitation simulated experiment apparatus for natural gas hydrate |
-
2009
- 2009-12-30 CN CN 200910214412 patent/CN101761326B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5434330A (en) * | 1993-06-23 | 1995-07-18 | Hnatow; Miguel A. | Process and apparatus for separation of constituents of gases using gas hydrates |
| CN101055276A (en) * | 2007-02-14 | 2007-10-17 | 中国科学院广州能源研究所 | Natural gas hydrate phase balance emulation experiment device |
| CN101050697A (en) * | 2007-04-06 | 2007-10-10 | 中国科学院广州能源研究所 | One dimension production analogue test device for natural gas hydrate |
| CN101376853A (en) * | 2008-09-09 | 2009-03-04 | 中国石油大学(北京) | Method and apparatus for simulating gas hydrate accumulation process under one-dimensional condition |
| CN101550816A (en) * | 2009-05-20 | 2009-10-07 | 中国科学院广州能源研究所 | Three-dimensional exploitation simulated experiment apparatus for natural gas hydrate |
Non-Patent Citations (3)
| Title |
|---|
| JP平6-71161A 1994.03.15 |
| 二氧化碳置换法开发天然气水合物的实验研究;王金宝等;《高校化学工程学报》;20070815;第21卷(第04期);第715-719页 * |
| 王金宝等.二氧化碳置换法开发天然气水合物的实验研究.《高校化学工程学报》.2007,第21卷(第04期),第715-719页. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101761326A (en) | 2010-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101761326B (en) | Experimental device for carbon dioxide replacement exploitation of gas hydrate | |
| CN101550816B (en) | Three-dimensional exploitation simulated experiment apparatus for natural gas hydrate | |
| CN103233704B (en) | A kind of CO 2/ N 2replacement exploitation permafrost region gas hydrates experimental simulation device | |
| CN105301200B (en) | Testing apparatus for characteristics of sand production during mining of natural gas hydrate | |
| CN110306952B (en) | A test device and test method for replacing natural gas hydrate with carbon dioxide assisted by depressurization method | |
| CN101246117B (en) | Gas-hydrate synthesizing and macro-microscopic mechanics nature synthetic experiment system | |
| CN102565273B (en) | Batch experimental device of water-rock reaction in CO2 geological storage | |
| CN104819914B (en) | Ultrasonic wave promotes the experimental provision of gas flow | |
| CN105223099B (en) | Shale gas gassiness tester and its test method | |
| CN104088612B (en) | The experimental simulation device of a kind of exploitation of gas hydrate and method | |
| CN102109513B (en) | An experimental device for detecting physical properties of natural gas hydrate in three-dimensional production | |
| CN105259018B (en) | A kind of gas hydrates synthesis is with decomposing multi-parameters test device | |
| CN109162708B (en) | Reservoir parameter multidimensional monitoring device in simulated hydrate exploitation process | |
| CN101050697A (en) | One dimension production analogue test device for natural gas hydrate | |
| WO2014176794A1 (en) | Three-dimensional strata stability simulation device for natural gas hydrate extraction | |
| CN101718730A (en) | Method and device for measuring the resistivity of gas hydrate and hydrate-containing sediment in situ | |
| CN111980673B (en) | Test device and test method to simulate the soil-well coupling effect of marine energy caused by hydrate mining | |
| CN101710088A (en) | Method and device for testing formation and decomposition of gas hydrate | |
| CN102042930B (en) | Gas hydrate mechanical property experiment device | |
| CN102052065A (en) | Simulation exploiting experiment device for natural gas hydrate | |
| CN110761749A (en) | Simulation experiment system and experiment method for synthesis and exploitation of natural gas hydrate | |
| CN108086960B (en) | Water flow erosion method natural gas hydrate exploitation experiment simulation method and device | |
| CN102778508A (en) | Device for in-situ synthesis and sound characteristic measuring of hydrate in deposits | |
| CN114166937B (en) | Experimental system for decomposing and secondarily generating hydrate in sediment | |
| CN102012246A (en) | Device for measuring in-situ flow rate change of marine cold seep gas seepage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |